If you're referring to someone on KA using a PRI 11 but the CX person using PRI 25 then you aren't comparing apples are you!?
It is not just the fact that it is PRI11, it is PRI11/B. A CX employee will not get PRI11/B until 10-14 years of service when they get to CN. You cannot get confirmed PRI11 W/Y most of the time as the flights are overbooked, you can get confirmed PRI11/B.
So again the people with high DOJ will not be able to get on flights because of quick commands at KA.
As an apple that has been offloaded by PRI11 already, I am speaking from experience. The experience is going to get worse as now there are an additional 10,000+ PRI11 sectors as it applies to the whole family, not just the crew-member.